Alvin james brastham



(No Model.) y,

t A. Jl` BRANHAM.

'WAGON BRAKE.

Patented Sept. 30, 1884.

uw Mu l i mi UNITED STATES PATENT rEicE.

ALVIN 'JAMES BRANHAM, OF SEDALIA., MISSOURI.

.WAGON-BRAKE.

SPECIFICATION forming part. of Letters Patent No. 3015,891, datedSeptember 30, 1884. Application tiled Moy 23, 1884. (No model.)

To all .whom it may concern:

Be it known that I, ALvIN J. BRANHAM; a citizen of the United States,residing at Se dalla, in the county of Pettis and State of Missouri,have invented certain new and useful Improvements in VVagonBralres;andldo declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use thesame, reference being had to theaccompanying drawings, and to letters or figures of reference markedthereon, which form a part of .this specification.

Figure l of the drawings is a top or plan View of my device, and Fig. 2is a vertical sectional view of the same.

This invention has relation to wagonbralres; and it consists in theconstruction and novel arrangement of devices, as hereinafter set forth,and particularly pointed out in the appended claim.

In the accompanying drawings, the letter A represents the front axle ofa wagon, and B the rear axle.

C indicates the perch, and D D the braces, extending from the perch tothe rear axle.

Glipped to the front portion of the perch is a transverse plate, E,provided with down# wardly-extending arms a, which are perforated forthe passage of the transverse clampbolt b. The ends of the horizontalarms c of this plate are turned upward to provide bearings d for therock-shaft F, to a central arm, e, .of which is pivoted the. forward endof the pitmanconnection G. To the end ofthe rockshaft, which islaterally extended at f for the purpose, is attached the operating-leverH,

provided, with a pawl, g, which engages a holding-arch, I.

Secured to the rear portion of the perch, in rear of the junction of theforward ends of the braces D D therewith, is a transverse plate, K,having lateral lugs or arms h. embracing the perch. The ends of thehorizontal arms k of this plate are perforated, and a perforation ismade in the middle portion, as shown, for the passage of thebroad-headed guidescrews Z Z and m, the former securing the ends of thearms k to the braces, and the latter passing through the'middle portionof the plate K into the perch. The upper portions of the shanlrs ofthese screws project above the plate sufficiently to engage,respectively, the oblique slots s of the pivoted brake-arms L and therear longitudinal slot, t, of the slidebar N. The slide-bar N is formedwith a transverse head, o, at its rear end, to the ends of which theinner ends of the brake-bars L are pivoted. It is also provided with asecond longitudinal slot, t', in front of the slot t, adapted to engagea guide-screw, w, which is fastened in the perch. The front end of theslide-bar is centrally recessed to receive the end of the pitman G,which is pivoted therein by means of a transverse pin, a', engagin gbearings formed at the end ofsaid bar.

The brake-arms L are made straight in their inner portions, b', whichare slotted, as hereinhefore described, to engage the guidescrews Z.These straight portions extend obliquely laterally and forward, crossingthe braces D D at or nearly at right angles. These arms are extendedfrom the straight portions in curved form, as shown at c, the curved portions terminating in the brake-blocks Z, or in bearings to whichbrake-blocks may be secured.

NVhen the lever is moved rearwardly, the slide-bar is pushed hack andthe brake-arms are drawn inward, and at the same time their outer endsare moved forward and inward away from the wheel-tires. When the leveris pushed forward, the slide-har is drawn forward, pushing thebrake-arms outward and pressing the brake-blocks against the tires ofthe wheels.

Having described this invention, what I claim, and desire to secure byLetters Patent,

In 'a wagon-brake, the rock-shaft and its bearing-plate secured to theperch, and the rear transverse plate secured to the perch and braces bythe guide-screws Z m, the pitman, and the double-slotted slide-barconnected thereto, the guide-screw io, and the oblique slottedbrake-arms L, having straight portions b', pivoted to the slidebar, andcurved outer portions, c', terminating in brake-blocks, substantially asspecified.

In testimony whereof l affix my signature in presence of two witnesses.

.Litres M. BYLE'R, F. H. TnYLoE.

